What is the use of blogging?
It's a test kitchen for ideas.
It's a practice court for writing skills.
There are many millions, perhaps hundreds of millions, of blogs in the world. Actively maintained blogs may be significantly less, but probably still number in the millions. Only a handful of these exercise any influence in any domain. Blogging out of a desire for influence (unless one already has influence from another source) is, well, silly. It's certainly not why I would start blogging.
I intend to blog to test ideas and to develop my writing skills. That is all.
I have no idea if anyone will ever read anything I put here. If some do, perhaps they will offer me feedback, and I may then improve more quickly. If no one does, then I won't mislead or offended anyone, nor embarrassed myself.
The downside of blogging, therefore, seems small compared to the potential benefit.
So I will blog. I intend to blog, anyway.
What will I blog about?
I anticipate most posts to be related to my research. Sometimes it may be on something that I have read, heard, or watched provoked my thoughts. If I start to feel very comfortable, or tipsy, I might post a poem or piece of short fiction. But don't hold your breath waiting for that.